Display substrate and manufacturing method therefor, and display device

A display device, comprising:

• a display substrate,
• wherein the display substrate comprises:
• a base substrate, comprising a display region and a bonding region on at least one side of the display region;
• a plurality of sub-pixels, in the display region;
• a plurality of data lines, in the display region and configured to provide data signals to the plurality of sub-pixels;
• a plurality of data lead lines, in the bonding region and electrically connected with the plurality of data lines, respectively;
• at least one group of contact pads, in the bonding region, wherein the at least one group of contact pads comprises a first group of contact pads and a second group of contact pads, each of the first group of contact pads and the second group of contact pads comprises a plurality of contact pads, the second group of contact pads is on a side of the first group of contact pads away from the display region, and the plurality of data lead lines are electrically connected with the first group of contact pads and the second group of contact pads;
• and
• a first insulation layer, in the bonding region, wherein the first insulation layer is in gaps between the plurality of contact pads and covers edges of the plurality of contact pads, and is configured to expose surfaces, away from the base substrate, of the plurality of contact pads;
• wherein a plurality of contact pads of the first group of contact pads are arranged in at least a first row, and a plurality of contact pads of the second group of contact pads are arranged in at least a second row,
• a row direction of the first row and a row direction of the second row are parallel to an extending direction of a side edge, facing the bonding region, of the display region,
• at least a part of the first insulation layer is in a gap between the first row and the second row, and
• the first insulation layer include an organic insulation material or a combination of an organic insulation material and an inorganic insulation material.

A manufacturing method for a display substrate, comprising:

• providing a base substrate, wherein the base substrate comprises a display region and a bonding region on at least one side of the display region;
• forming a plurality of sub-pixels and a plurality of data lines in the display region, wherein the plurality of data lines are configured to provide data signals to the plurality of sub-pixels;
• forming a plurality of data lead lines in the bonding region;
• forming at least one group of contact pads in the bonding region, wherein the at least one group of contact pads comprises a first group of contact pads and a second group of contact pads, each of the first group of contact pads and the second group of contact pads comprises a plurality of contact pads, the second group of contact pads is on a side of the first group of contact pads away from the display region, and the plurality of data lead lines are electrically connected with the first group of contact pads and the second group of contact pads in one-to-one correspondence manner;
• and
• forming a first insulation layer in the bonding region, wherein the first insulation layer is in gaps between the plurality of contact pads and covers edges of the plurality of contact pads, and is configured to expose surfaces, away from the base substrate, of the plurality of contact pads;
• wherein a plurality of contact pads of the first group of contact pads are arranged in at least a first row, and a plurality of contact pads of the second group of contact pads are arranged in at least a second row,
• a row direction of the first row and a row direction of the second row are parallel to an extending direction of a side edge, facing the bonding region, of the display region,
• at least a part of the first insulation layer is in a gap between the first row and the second row, and
• the first insulation layer include an organic insulation material or a combination of an organic insulation material and an inorganic insulation material.